Alright, let's work through 9798155 times 87744478 step by step
9798155 × 87744478 = 87744478 × (9798155)
+ 87744478 × 5 that results in 438722390
+ 87744478 × 50 yielding 4387223900
+ 87744478 × 100 yielding 8774447800
+ 87744478 × 8000 yielding 701955824000
+ 87744478 × 90000 producing 7897003020000
+ 87744478 × 700000 producing 61421134600000
+ 87744478 × 9000000 yielding 789700302000000

= 859733995838090
